PAS-C01 Technology Practice Question
A company runs its SAP system on AWS and uses a Multi-AZ RDS for Oracle database for the SAP Central Services (SCS) instance. The SCS instance is currently on a single EC2 instance in one Availability Zone. The company wants to ensure high availability for the SCS service. What should they do?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement an SAP ASCS/ERS cluster using two EC2 instances and a shared file system.
SAP Central Services (SCS) can be made highly available by implementing an SAP ASCS/ERS cluster using two EC2 instances and a shared file system (such as Amazon FSx for Windows or EBS Multi-Attach) with a floating IP. This provides automatic failover in case of instance or AZ failure. Option B is incorrect because placing the SCS on a larger EC2 instance with EBS snapshots does not provide high availability; it only offers data backup and recovery, not automatic failover. Option C is incorrect because an Application Load Balancer is designed for HTTP/HTTPS traffic and cannot handle SAP-specific protocols used by SCS. Option D is incorrect because the RDS for Oracle database is used for the SAP database, not for the SCS instance; the SCS requires its own file system and cannot run on RDS.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Implement an SAP ASCS/ERS cluster using two EC2 instances and a shared file system.
Why this is correct
This is the standard HA setup for SAP Central Services on AWS.
- ✗
Place the SCS instance on a larger EC2 instance and use EBS snapshots for recovery.
Why it's wrong here
Snapshots are for backup, not HA.
- ✗
Use an Application Load Balancer to distribute traffic to multiple SCS instances.
Why it's wrong here
SAP Central Services uses proprietary communication, not HTTP.
- ✗
Configure the SCS instance on the existing RDS for Oracle database.
Why it's wrong here
SCS is a separate service, not part of the database.
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